php - PHP：与其日期对应的组数组

Question

我有一个列出日期时间的数组。如何对具有相同日期的数组进行分组。

$array = [
   "2019-07-17 10:02:00",
   "2019-07-17 12:00:00",
   "2019-07-18 08:00:00",
   "2019-07-19 01:00:00",
   "2019-07-19 02:00:00"
];

预期结果：

$result = [
       0 => [
            "2019-07-17 10:02:00",
            "2019-07-17 12:00:00"
       ],
      1 => [
            "2019-07-18 08:00:00"
       ],
       2 => [
            "2019-07-19 01:00:00",
            "2019-07-19 02:00:00"
       ]
];

标签： phparraysdate

Answer 1

尝试这个：

$grouped = [];
foreach ($array as $dateString) {
    $dateObject = new \DateTime($dateString);
    $grouped[$dateObject->format('Y-m-d')][] = $dateString;
}
$grouped = array_values($grouped);
var_dump($grouped);

例子。